On Thu, 2013-12-12 at 00:21 +0300, Vasily Khoruzhick wrote: > On Wed, Dec 11, 2013 at 11:55 PM, James Cameron <quozl@xxxxxxxxxx> wrote: > > On Wed, Dec 11, 2013 at 11:10:50AM +0300, Vasily Khoruzhick wrote: > >> On Tue, Dec 10, 2013 at 5:27 AM, James Cameron <quozl@xxxxxxxxxx> wrote: > >> > On Mon, Dec 09, 2013 at 12:38:28PM +0300, Vasily Khoruzhick wrote: > >> >> On Mon, Dec 9, 2013 at 7:18 AM, James Cameron <quozl@xxxxxxxxxx> wrote: > >> >> > On Fri, Dec 06, 2013 at 01:40:00PM +0300, Vasily Khoruzhick wrote: > >> >> >> Out of curiosity, > >> >> >> > >> >> >> Does anyone know if it's possible to get thin firmware for 8686 with > >> >> >> SPI interface? > >> >> > > >> >> > What happens when you try? > >> >> > >> >> How? There's no tf available for 8686 with SPI interface. > >> > > >> > How do you know that? Are you saying that SPI support was removed > >> > from firmware during the conversion from fat to thin? > >> > >> Err, there's no lbtf_spi.bin file. > > > > Basing decisions on the names of files rather than the code they > > may contain seems rather limiting. > > > > In the absence of evidence, there's a possibility that SPI support > > remained. > > But fat firmware differs for SPI and SDIO Correct. AFAIK (and I could be wrong, I haven't been involved for a few years) CozyBit only did the thin firmware for OLPC-specific deployments of the usb8388 and sd868x parts which were included in OLPC devices, to support the mesh networking protocols used by OLPC. None of those parts used SPI; and thus I would not expect there to be a thin firmware for any SPI parts. I'd love to be proved wrong though. Each bus type uses different firmware, so yes, you'd need both a helper firmware and a main firmware that contains code specific to the bus type. Dan > >> >> > How are you downloading firmware over SPI? > >> >> > >> >> See drivers/net/wireless/libertas/if_spi.c, but it's for fat > >> >> firmware > >> > > >> > What happens if you send the thin firmware instead? > >> > >> I have no thin firmware for 8686 with SPI interface > > > > What happens if you send the thin firmware for SDIO interface to the > > device using the fat firmware helper for SPI interface? > > > > I don't have an SPI setup to test, but I gather you do. > > OK, I'll try. > > >> >> > I'm not aware of a second stage firmware download helper > >> >> > specific to the SPI mode. > >> >> > >> >> What's a second stage firmware download helper? > >> > > >> > File sd8686_helper.bin, we use it in Open Firmware with SDIO 8686 on > >> > OLPC XO. > >> > > >> > For SPI, which we don't use, I see if_spi.c uses gspi8686_v9_helper.bin > >> > > >> > I was wrong; I am now aware of a second stage firmware downloader > >> > helper specific to the SPI mode. I hadn't looked before. > >> > > >> >> > I think it is not possible without firmware engineering. > >> >> > >> >> Yeah, just hoped that Marvell already did it. It's a pity that > >> >> firmware source code isn't available :( > >> > > >> > Cozybit did the thin firmware, if I recall correctly. > >> > >> Do you think it makes sense to contact them? > > > > I don't think it makes sense to ignore them, but I don't wish to > > speculate further. > > OK, thanks! > > Regards > Vasily > > > -- > > James Cameron > > http://quozl.linux.org.au/ > > _______________________________________________ > libertas-dev mailing list > libertas-dev@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/libertas-dev -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html